for LaTeX
Shorter math commands for calculus
Open calparse.tex above and copy it!
math mode output \calm{{Dz}/{Dx} = {2x}/{(x^2+y^2)} - {2x^3}/{(x^2+y^2)^2}}

plain text output $\calp{{Dz}/{Dx} = 5/6}$

D -> partial
*( -> \left(
*) -> \left)
*[ -> \left[
*] -> \left]
. -> \cdot
{abc}/{def} -> \frac{abc}{def}
a/b -> \frac{a}{b}
{abc}*/{def} -> \dfrac{abc}{def}
a*/b -> \dfrac{a}{b}
- incompatible with \sin \cos \tan \arctan etc. in falign and others